Hey guys i am new and have been reading a lot about these update. I was wondering if some one could tell me how to go about seeing if i need to get and update on my truck.
Thanks

if you aren't seeing any issues on your truck then you probably don't need it. its mainly for the LLY motors that are mostly seeing a set few problems that the update addresses. the update came out on September 10 of this year if memory serves...so if you purchased your LLY before this then you probably don't have it, but like I said if you aren't havign problems then probably no need to get it done if you are happy.

i Got my LLY in jan 13 04.

I had both mine reflashed. Improved low end throttle response and a little better fuel mileage.

Regardless of when your truck was built, I would venture to guess its likely not there.. I have found that these types of updates dont usually hit the production runs as fast as the tsb's hit

so do i just tell my dealer that i want the updates and he will know what i am talking about

Do 05s need any updates?

Of all the 05's that I have checked, none have had the updated calibration. Which also raises the question, if the 04 and 05 trucks share the same calibration, where did the extra 15 lbs. of torque magically come from?

so do i just tell my dealer that i want the updates and he will know what i am talking about








Print a copy of this and show it to him/her. Worked for me.
<H1>04 6.6 LLY Smoke , Fuel Knock , Surging and High Injector Balance Rates - kw white black idle surge rough noise accelerate P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308 miss misfire SES DTC #PIP3129 - (Sep 10, 2004)</H1>


04 6.6 LLY Smoke, Fuel Knock, Surging, and High Injector Balance Rates


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The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.<A name=ss1-1549221><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1549221&amp;psdid=437&amp;evc=sm#ss1-1549221" target="_blank">
<H5>Condition/Concern:</A></H5>


Customer concern may be a low speed surge (8 to 10 mph or near 1000 RPM), acceleration fuel knock noise at 1500 to 1800 RPM, rough idle, white smoke at idle, or high positive injector balance rates.<A name=ss2-1549221><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=1549221&amp;psdid=437&amp;evc=sm#ss2-1549221" target="_blank">
<H5>Recommendation/Instructions:</A></H5>

<LI ="1">High positive injector balance rates (over +4.0 in park or +6.0 in drive) may be causing white smoke at idle or while driving.
<LI ="1">Document all injector cylinder balance rates at the beginning of the diagnosis.
<LI ="1">There is an updated calibration to address the white smoke, high positive balance rates, idle surge, and a fuel knock noise at or near 1500 to 1800 RPM.
<LI ="1">Install the updated calibration and evaluate the smoking, high injector balance rates, idle surge, and fuel knock noises.
<LI ="1">If there is still a mechanical concern with an injector, and balance rates are still over the SI specification of +4.0 in park or +6.0 in drive, replace only the effected injector. </LI>


NOTE: Before any injector replacements a large fuel sample should be taken from the fuel filter and checked for contaminants or poor quality.